anonymous
  • anonymous
Solve each system using substitution. y= 3x +11 y= -2x +1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
This means the same thing as y = 3x + 11 AND y = -2x + 1
myininaya
  • myininaya
hey! :) 3x+11=-2x+1 can you solve this?
anonymous
  • anonymous
So you can set them equal, as myininaya has done.

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anonymous
  • anonymous
yea
myininaya
  • myininaya
:)
anonymous
  • anonymous
so all i havta to is solve that euation?
myininaya
  • myininaya
basically
myininaya
  • myininaya
solving that equation will give us x
myininaya
  • myininaya
and then when we get x we plug it into one of the equations given to find y
myininaya
  • myininaya
therefore finding the point of intersection (x,y)
myininaya
  • myininaya
so if you want to try to solve for x i will do the same and i can tell you if you are right but if you run into trouble we can solve together okay?
anonymous
  • anonymous
Ok :)
anonymous
  • anonymous
3x+11=-2x+1 +2x +2x 5x+11=1 -11 -11 5x= 12 ___ ____ 5 5
myininaya
  • myininaya
so 1-11 is 12 ?
myininaya
  • myininaya
what is 11-1?
anonymous
  • anonymous
oh sryy
anonymous
  • anonymous
-10
myininaya
  • myininaya
perfect! :)
myininaya
  • myininaya
so we have 5x=-10
anonymous
  • anonymous
x= -2
myininaya
  • myininaya
brilliant! :) now plug this into one of the equations given to find y like this y=3(-2)+11
myininaya
  • myininaya
i just replaced x with -2 since x=-2
myininaya
  • myininaya
now you are to simplify 3(-2)+11 to find y
anonymous
  • anonymous
y=6 ?
myininaya
  • myininaya
well 3(-2)+11 is y i just mean simplify lol
myininaya
  • myininaya
-6+11=11-6=5 right?
anonymous
  • anonymous
right,
anonymous
  • anonymous
so y=5
anonymous
  • anonymous
(-2,5) correct?
myininaya
  • myininaya
that is totally correct
anonymous
  • anonymous
Thank you!! XD
myininaya
  • myininaya
if you had used the other equation you still would have got same thing by the way
myininaya
  • myininaya
great job! you get a medal!
anonymous
  • anonymous
Your the best!, thanks :D
myininaya
  • myininaya
I know.
myininaya
  • myininaya
Thanks. lol

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